I had the exact same problem with my fierce XL .I removed the SD card and went to Setting and did a factory reset .it totally erased everything on my phone .then when it was done resetting . The phone works correctly .I had the exact same problem with my fierce XL .I removed the SD card and went to Setting and did a factory reset .it totally erased everything on my phone .then when it was done resetting . The phone works correctly .

In the long run, mount the application you've downloaded itutuapp All you need to do is set up TuTuApp on your AndroidIn the long run, mount the application you've downloaded itutuapp All you need to do is set up TuTuApp on your Android

Remove the back cover and the battery for a short while. Put the battery and the cover back in.Turn on the phone by holding the Power button.Remove the back cover and the battery for a short while.
Put the battery and the cover back in.
Turn on the phone by holding the Power button.

I don't know if it can be done. But when a phone (or any electronic device with a battery) not want to power up. I should always check if the battery is charged, and if the contacts from the battery and in the device are clean and shiny and not bent.
Then if possible to come close to the switch look if the switch is clean and nothing is wrong there.

Try going into the WiFi settings on your phone and removing/forgetting the network. Reboot your phone, then try to reconnect like it is a new connection. If this doens't work, your phone may have a hardware problem, or an incompatibility with your Wireless router.

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It can unlock only if this says as Unlock Failed:This mobile wireless device is not eligible for unlock. For Device Unlock eligibility details, please go online or contact Customer Care
if you got this error just apply here